These protective plates, primarily composed of bone and covered by a thin layer of skin, serve a multitude of crucial functions for aquatic organisms. They act as a physical barrier, shielding the underlying tissues from injury and abrasion as the animal navigates its environment. For instance, scraping against rocks or encountering sharp objects in the water poses a risk that this outer layer mitigates.
The presence of this integumentary system contributes significantly to the organism’s survival. This layer defends against parasitic infestations and fungal infections, preventing potentially lethal ailments. Furthermore, they aid in streamlining the body, reducing drag and improving swimming efficiency. Historically, the study of their structure and arrangement has provided valuable insights into evolutionary relationships and aquatic adaptation.
